The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 09, 2019
Filed:
Nov. 09, 2017
Kahei Nakamura, Tokyo, JP;
Masaya Kawarada, Kanagawa, JP;
Kohta Aoyagi, Kanagawa, JP;
Suguru Yokozawa, Kanagawa, JP;
Nobuyuki Satoh, Kanagawa, JP;
Kahei Nakamura, Tokyo, JP;
Masaya Kawarada, Kanagawa, JP;
Kohta Aoyagi, Kanagawa, JP;
Suguru Yokozawa, Kanagawa, JP;
Nobuyuki Satoh, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming apparatus includes an image forming device; an imaging device; and at least one processor including a pattern forming unit to cause a recording head to form a pair of first marks, with first and second nozzles disposed at a first distance from each other in a direction of conveyance of a recording medium, while the recording head moves in a first direction and cause the recording head to form a second mark while the recording head moves in a second direction, a position detector to detect positions of the first and second marks in a captured image, a ratio calculator to calculate a ratio between a distance between the first marks in the captured image and a deviation of the second mark in the captured image, and distance calculator to calculate a distance of the deviation based on the first distance and the ratio.